Sony BVP-570, Maintenance Manual

Page: 712 / 806

7-20
BVP-570
IC
MP7670AS-TE2 (MICROPWR)FLAT PACKAGE
LATCH A D/A A
A V
A V
B V
B V
D/A B LATCH B
LATCH C D/A C
C V
C V
LATCH D D/A D
D V
D V
LATCH E D/A E
E V
E V
LATCH F D/A F
F V
F V
LATCH G D/A G
G V
G V
LATCH H D/A H
H V
H V
+
_
23
2
4
3
5
1
22
24
8
10
9
11
14
12
15
13
LOGIC
CONTROL
SERIAL SHIFT
REGISTER
D7 TO D0 A3 A2 A1 A0
7
20
17
16
PR
LD
DI
CK
6
GND
18
DO
+
_
+
_
+
_
+
_
+
_
+
_
+
_
MSM82C55A-2GS
MSM82C55A-2GS-VK (OKI)FLAT PACKAGE
A0, A1
CS
D0 - 7
PA0 - 7
PB0 - 7
PC0 - 7
RD
WR
: PORT SELECT ADDRESS
: CHIP SELECT
: DATA BUS
: PORT A IN/OUT
: PORT B IN/OUT
: PORT C IN/OUT
: READ
: WRITE
A1
0
0
1
1
0
0
1
1
X
32
31
30
29
28
27
26
25
4
3
1
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
RD
WR
CS
33
RESET
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
43
42
41
40
38
37
36
35
14
15
16
18
19
20
21
23
9
10
11
13
8
7
6
5
CS
A1
A0
PC7
PC6
PC5
PC4
PC0
PC1
PC2
1
2
3
4
5
6
7
8
9
10
11
GND
0
1
X
: LOW LEVEL
: HIGH LEVEL
: DON’T CARE
PC3 PB0 PB1 PB2 PB3 PB4 PB5 PB6
12 13 14 15 16 17 18 19 20 21 22
NC V
DD
NC
RD
PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7
WR
44 43 42 41 40 39 38 37 36 35 34
NC
33
32
31
30
29
28
27
26
25
24
23
V
DD
RESET
D0
D1
D2
D3
D4
D5
D6
D7
PB7
A0
0
1
0
1
0
1
0
1
X
CS
0
0
0
0
0
0
0
0
1
WR
1
1
1
1
0
0
0
0
X
RD
0
0
0
0
1
1
1
1
X
OPERATION
PORT A
→
DATA BUS
PORT B
→
DATA BUS
PORT C
→
DATA BUS
NO OPERATION
DATA BUS
→
PORT A
DATA BUS
→
PORT B
DATA BUS
→
PORT C
DATA BUS
→
CONTROL REGISTER
HIGH IMPEDANCE
44
34
C-MOS PROGRAMMABLE PERIPHERAL INTERFACE
—TOP VIEW—
DATA
BUS
BUFFER
READ/
WRITE
CONTROL
LOGIC
D0 - D7
RD
WR
RESET
CS
A0
A1
GROUP
B
CONTROL
GROUP
A
CONTROL
GROUP
A
PORT A
PA0 - PA7
GROUP
A
PORT C
HIGHER
4-BITS
PC4 - PC7
GROUP
B
PORT C
LOWER
4-BITS
PC0 - PC3
GROUP
B
PORT B
PB0 - PB7
5 3
2 4
1 23
24
10
12
13
18
A
B
C
A
B
C
D
E
G
H
DO
CK
DI
: CLOCK INPUT
: SERIAL DATA INPUT
: DATA OUTPUT DO
PR
: PRESET INPUT
: DATA LOAD CONTROL INPUT LD
D
22
E
8
F
9
G
14
H
15
PR
7
LD
16
DI
20
17
F
11
C-MOS 8-BIT 8CHANNEL D/A CONVERTER
—TOP VIEW—
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
GND
C V
OUT
B V
OUT
A V
OUT
B V
IN
A V
IN
PR
IN
E V
IN
F V
IN
E V
OUT
F V
OUT
G V
OUT
D V
OUT
C V
IN
D V
IN
DI
IN
DO
OUT
CK
IN
LD
IN
H V
IN
G V
IN
H V
OUT
V
DD
V
SS